Which car is faster the caprice ss or the mercury marauder?

If you are talking about the 94-96 implala ss, the Mercury is slower by about .2-.3 15.0@92mph vs. 15.5@91mph(as per car & driver), the 2007 impala ss will run 14.2@101, the 2014 SS is coming with a 415hp ls3 motor, and is said to run about 13flat.